[Chrome/Vivaldi] browsers local storage not properly deleted

[jeroenev]

samy.pl/evercookie can recover data from the browsers localstorage after it was cleaned with the vivaldi cleaner
aside from that it seems to work fine (in windows atm, will test linux later)

[jeroenev]

on linux it doesn't seem to detect i have vivaldi installed
I know where to find the localstorage
also seems to affect chrome by looking at the cleaner for chrome/ium
seems to be missing:
HTM5 Localstorage / globalstorage
HTML5 db storage
HTML5 indexedDB storage
located on windows in appdata/local/Vivaldi, instead of appdata/roaming/vivaldi, like the rest of the cleaning locations
will check later to enhance the cleaner
any way to clean entries inside of LevelDB files? (chromes new replacement for sqlite) without deleting the entire ldb file?
i've seen some stuff with sqlite cleaning in the examples, but haven't seen anything with leveldb
seems like sqlite is only vacuuming, and not really deleting any data?
also any easy way to ignore certain folders?
would like to clean excluding folders starting with chrome-extension_ to not delete extension settings
seems like I just need to use nregex
maybe also delete extension stuff with a separate checkbox

[jeroenev]

also is there more info on these command options:
chrome.autofill , chrome.databases_db , chrome.favicons , chrome.history , chrome.keywords
they seem pretty vague, what do they actually do?
could I use chrome.databases_db to clean levelDB databases without deleting chrome-extension related data?
Bleachbit should add a command for deleting tables and records from databases
EDIT: can probably do it myself for sqlite, not sure about levelDB as i don't know anything about it
like a <command="sqlite" delete="records" from="tablename" where="condition"> or something, also for levelDB

localstorage on google-chrome is also not properly cleaned, testing with the evercookie page (tested on Ubuntu 16.04, with chrome Version 69.0.3497.81)

[jeroenev]

added pull request, hopefully i can update it to clean the LevelDB files in the Local Storage folter properly without entirely deleting them (and deleting some extensions settings in the progress)